Saw-guide and rounder



(No Model.) v 2 Sheets-Sheet 1. P. M. WEAVER 8v F. E. THOMA.

SAW GUIDE AND ROUNDER.

No. 449,984. Patented Apr. 7, 1891.

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F.. M. WEAVER 86 F. F. THOMA.

SAW GUIDE AND ROUNDER. .No. 449,984..

Patented Apr. 7, 1891.

I ff 4 UNITED STATES PATENT OFFICE.

FRANK M. VEAVER AND FRANK F. THOMA, OF SILVER CITY, TERRITORY OF NEV MEXICO.

SAW-GUIDE AND ROUNDER,

SPECIFICATION forming part of Letters Patent No. 449,984, dated April '7, 1891. Application filed January 31, 1890. Serial No. 338,829. (No model.)

To all whom, it may cancer/t:

Be it known that we, FRANK M. VEAVER and FRANK F. THOMA, citizens of the United States,'residing at Silver City, in the county of Grant and Territory of New lllexico, have invented certain new and useful Improvements in Saw-Guides and Rounders; and we do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention has relation to improvements in saw-guides and rounders for circular saws, and the novelty will be fully understood from the following description and claims when taken in connection with the annexed drawings, in which Figure 1 is a plan view of our improved machine. Fig. 2 is a side elevation of the machine. Fig. 3 is a cross-sectional view in detail taken at the point indicated by the dotted line .90 as on Fig. 1. Fig. 4 is a transverse sectional view taken at the point indicated by dotted lines 'y y on Fig. 1, and Fig. 5 is a sectional view taken at the point indicated by the dotted lines a a on Fig. 1.

Referring by letter to said drawings, A indicates the base-plate, which is adapted to be secured to the frame of any ordinary sawing machine. This base-plate is provided at suitable points with elongated slots to for the reception of bolts or other fastening devices, whereby the machine may be adjustably secured to a saw-frame. This base-plate is furthermore provided on its upper side, about midway of its length and at one edge thereof, with a vertically-disposed lug b, which is internally screw-tapped for a purpose which will be presently explained. From the inner side of this screw-tapped lug b the base-plate A has a dovetailed recess 0, which extends transversely to the opposite longitudinal edge of said base-plate.

B indicates the stock or main frame of the file-holder and saw-guide. This frame is preferably of a form substantially as shown, having a lateral arm D, which has its longitudinal edges beveled, as better shown in Fig. 0

of the drawings, designed to take into the dovetailed recess 0 in the base-plate. This lateral arm D is provided at its free end a with a semicircular recess 6, and said end has its side walls beveled to enter beneath the lip or flange of the slot c in the base-plate. I

0 indicates a cap block or plate, which is recessed at X in its under side to correspond with the recess e in the lug d, so as to co-op- .erate therewith in receiving the head g of an adjusting-screw. E and allow the latter to freely turn therein. On the outer side of the plate 0 the arm D is provided with a screwtapped vertical hole 71 designed to receive a screw or threaded bolt F, the object of which is to serve in staying the position of the frame B with respect to the plate A. The adjusting serew E, which has its innerend swiveled in the inner end of the branch D of the frame B, engages the threads in thelug b of the base-plate, so that it may be manipulated to move the entire frame B, as desired, upon said baseplate, and when so adjusted the screw F maybe turned to impinge upon said base-plate, and thereby serve to prevent farther sliding movements of the parts.

The main frame B is provided relatively at right angles to the arm D with a forked branch G comprising the two arms 'i, and atthe opposite end of said frame is provided a central internally-threaded aperture H to receive an adjusting-screw I forthefile-holder. The branches i of the forked portion G are beveled 011 their inner sides from a central point longitudinally outward in opposite directions, as shown at K, and the'outer ends of these branches are provided with threaded holes to receive screws or bolts m, whereby the blocks 1 may be adjustably secured in position to compensate for wear and be readily adjusted to the various thicknesses of saws. These blocks while serving to true the movements of the saw, so as not to deviate from theline desired upon the work, may be of such material as to lubricate the saw; but in any event they should not be of such material as to create great friction.

L indicates the tile-holder. This file-holder is designed to be adjusted in the forked branch G, and is composed of the two sections a and 19. These sections have their outer sides beveled, as shown at q, to correspond with the bevels 7;. of the branches t', and one of the sections, such p, is provided on its engaging face with recesses r, and the section N provided with pins 3 to take into said recesses. The sections are also provided with an aligned threaded hole to receive a connecting-screw M, and said sections are also provided on their engaging faces with corresponding recesses to form a seat for the swiveled head on the inner end of the adjusting-screw I. This file-holder is furthermore provided with a dovetailed groove to receive afile. By this construction it will be seen that We provide a cheap and efficient means of holding and adjusting a file to round the saw While in motion.

From the construction described it will be seen that We are enabled to obtain an ad justment of the forked frame in a plane at right angles to that of the saw to be operated upon, and we also obtain an adjustment of the fileholder in aplane corresponding With the same.

Having described our invention, what we claim is 1. The combination, with the base-plate having a screw-tapped lug and a dovetailed recess extending from the lug, of a file-holding and saw-guiding frame having a lateral dovetailed arm arranged in the recess of the base-plate, said arm having a semicircular recess, a plate secured on said lug and having a corresponding recess to receive a head of an adj Listing-screw, and the arm also having a vertically-arranged threaded hole, a screw seated in said hole to fix the position of the saw-guide and file-holder frame on the base-plate, and the screw for adjusting said frame on said plate, substantially as specified.

2. A saw-guide and rounder having its main frame forked as described and provided with a screw-tapped hole,in combination with the file-holder composed of the two parts connected by pins, and the screw m, and having their sides beveled to correspond With the bevels of the forked branch and the screw. seated in the threaded aperture of said frame and having one end swiveled in the file-holder, substantially as specified.

3. A saw-guide and rounder comprising, in combination, abase-plate, a frame adjustable at right angles to the plane of the saw, sawguides mounted on the fixed branches of a fork and adjustable at right angles to the plane of the saw and a file-holder guided in the forked bran ch carrying the saw-guides and adjustable in the plane of the saw, substantially as specified.

FRANK M. WEAVER. FRANK F. THOMA. \Vitnesses:

A. H. MOREHEAD, JOHN M. GINN. 

